Adjustable kettlebell



FIG. 1 is a perspective view of an adjustable kettlebell showing our new ornamental design;

FIG. 2 is a front view of the adjustable kettlebell shown in FIG. 1; the rear view is a mirror image;

FIG. 3 is a view of the adjustable kettlebell taken from either the right side or the left side of FIG. 2;

FIG. 4 is a top view of the adjustable kettlebell shown in FIG. 1; and,

FIG. 5 is a bottom view of the adjustable kettlebell shown in FIG. 1. 

The ornamental design for an adjustable kettlebell, as shown and described. 